Oil-burner.



' PATENTED, AUG. 11,, 1908.

A; H, NEWMAN. OIL BURNER. APPLICATION FILED SE PT'.2,190 8.

llllllll "J I WI TN ESSES INVENTOR,

1 ATTORNEY.

ALFRED H. NEWMAN, OF OAKLAND, CALIFORNIA.

OIL-BURNER.

Specification of Letters Patent.

Patented Aug. 11, 1908.

Application filed. September 26, 1906. Serial No. 336,262.

To all whom it may concern:

Be it known that I, ALFRED HENRY NEW- MAN, a citizen of the Dominion of Canada, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Oil-Burners, of which the following is a specification.

The object of this invention is to provide an oil burner by means of which the oil can be very finel atomized, so that it can be burned comp etely and efficiently.

In the accompanying drawing, Figure 1 is a vertical section of the burner, certain parts being shown in side elevation; Fig. 2 1s an enlarged detail vertical section of the mixing chamber, showing the action of the steam upon the oil.

Referring to the drawing, 1 indicates an oil pipe and 2 a steam pipe, adapted to be connected respectively withsources of supply of these fluids. The oil pipe enters at right angles the oil passage 3 in which is a valve 4 controlling the oil outlet 5. The steam enters at an acute angle the steam passage 6 in which is a valve 7 controlling the steam outlet 8. The oil outlet 5 extends horizontally and in line with the general direction of the cylindrical mixing chamber 9, while the steam outlet 8 discharges downwards into said mixing chamber and forwards at an acute angle, slightly in advance of the end of the outlet 5. This mixing chamber is of sufficient length to permit the oil to be thoroughly sprayed by the repeated impact of the steam thereon.

The action of the steam on the oil is as follows: The oil valve is opened to a suflicient extent to allow a small stream of oil to pass through the oil outlet, and this stream, emerging from said outlet into the mixing chamber of greater diameter, spreads out at the bottom, and partly at the sides, of said chamber in a thin stream. The distance from the oil outlet to the point of im act ofthe steam is such as to permit the oi to assume at the bottom of the mixing chamber the form of a stream so shallow as to be almost a film of oil. The steam valve being sultably opened, a jet of steam is discharged obliquely at a high velocity upon the thin stream or film of oil, scattering the film and causing it to rebound from the walls of the mixing chamber. The steam is itself deflected from the bottom of the mixing cham ber against the top thereof, and by reason of its repeated deflections is thoroughly commin led with the oil, changing the form of the atter to an extremely fine spray. In practice, this spray is found to be so fine that the oil is distributed evenly over surfaces twenty feet or more away from the oil burner in all directions. Hence the combustion of the oil is very complete and effective.

The following conditions are necessary for the successful operation of this oil burner. First, the diameter of the mixing chamber should be greater than that of the oil outlet so that the oil emerging from said outlet can spread out into a fine stream or film at the bottom of the mixing chamber; second the steam should be directed down upon the film of oil and forwards at an acute angle; third, the point of impact of the steam upon the oil should be sufficiently far in advance of the oil outlet to enable the oil to spread itself out in a fine stream or film before the impact thereon of the steam; fourth, the mixing chamber should be sufficiently long in front of the point of impact to enable the steam and oil to thoroughly conimingle.

I claim:-

An oil burner having a horizontally directed mixing chamber unobstructed from its feed to its discharge end, an oil conduit having an outlet'discharging into said mixing chamber, a steam COIlCllllt having an outlet discharging the steam downwards and for wards at an acute angle into the mixing chamber in front of the oil outlet, a steam pipe connected with the steam conduit, and a steam controlling valve arranged in proximity to the steam outlet, the mixing chamber being of greater cross-sectional area than the combined steam and oil outlets, substantially asdescribed.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

A. H. NEWMAN. Witnesses:

E. R. Zscxrnscxn, ELIZABETH M. REYNOLDS. 

